28712040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 192

約数和(自身を含む): 105883200

約数和(自身を除く): 77171160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 49, 56, 57, 60, 70, 76, 84, 95, 98, 105, 114, 120, 133, 140, 147, 152, 168, 190, 196, 210, 228, 245, 257, 266, 280, 285, 294, 380, 392, 399, 420, 456, 490, 514, 532, 570, 588, 665, 735, 760, 771, 798, 840, 931, 980, 1028, 1064, 1140, 1176, 1285, 1330, 1470, 1542, 1596, 1799, 1862, 1960, 1995, 2056, 2280, 2570, 2660, 2793, 2940, 3084, 3192, 3598, 3724, 3855, 3990, 4655, 4883, 5140, 5320, 5397, 5586, 5880, 6168, 7196, 7448, 7710, 7980, 8995, 9310, 9766, 10280, 10794, 11172, 12593, 13965, 14392, 14649, 15420, 15960, 17990, 18620, 19532, 21588, 22344, 24415, 25186, 26985, 27930, 29298, 30840, 34181, 35980, 37240, 37779, 39064, 43176, 48830, 50372, 53970, 55860, 58596, 62965, 68362, 71960, 73245, 75558, 97660, 100744, 102543, 107940, 111720, 117192, 125930, 136724, 146490, 151116, 170905, 188895, 195320, 205086, 215880, 239267, 251860, 273448, 292980, 302232, 341810, 377790, 410172, 478534, 503720, 512715, 585960, 683620, 717801, 755580, 820344, 957068, 1025430, 1196335, 1367240, 1435602, 1511160, 1914136, 2050860, 2392670, 2871204, 3589005, 4101720, 4785340, 5742408, 7178010, 9570680, 14356020, 28712040]

約数ペア:

[(1, 28712040), (2, 14356020), (3, 9570680), (4, 7178010), (5, 5742408), (6, 4785340), (7, 4101720), (8, 3589005), (10, 2871204), (12, 2392670), (14, 2050860), (15, 1914136), (19, 1511160), (20, 1435602), (21, 1367240), (24, 1196335), (28, 1025430), (30, 957068), (35, 820344), (38, 755580), (40, 717801), (42, 683620), (49, 585960), (56, 512715), (57, 503720), (60, 478534), (70, 410172), (76, 377790), (84, 341810), (95, 302232), (98, 292980), (105, 273448), (114, 251860), (120, 239267), (133, 215880), (140, 205086), (147, 195320), (152, 188895), (168, 170905), (190, 151116), (196, 146490), (210, 136724), (228, 125930), (245, 117192), (257, 111720), (266, 107940), (280, 102543), (285, 100744), (294, 97660), (380, 75558), (392, 73245), (399, 71960), (420, 68362), (456, 62965), (490, 58596), (514, 55860), (532, 53970), (570, 50372), (588, 48830), (665, 43176), (735, 39064), (760, 37779), (771, 37240), (798, 35980), (840, 34181), (931, 30840), (980, 29298), (1028, 27930), (1064, 26985), (1140, 25186), (1176, 24415), (1285, 22344), (1330, 21588), (1470, 19532), (1542, 18620), (1596, 17990), (1799, 15960), (1862, 15420), (1960, 14649), (1995, 14392), (2056, 13965), (2280, 12593), (2570, 11172), (2660, 10794), (2793, 10280), (2940, 9766), (3084, 9310), (3192, 8995), (3598, 7980), (3724, 7710), (3855, 7448), (3990, 7196), (4655, 6168), (4883, 5880), (5140, 5586), (5320, 5397)]