20305680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:169

約数の個数: 160

約数和(自身を含む): 68269440

約数和(自身を除く): 47963760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 61, 73, 76, 80, 95, 114, 120, 122, 146, 152, 183, 190, 219, 228, 240, 244, 285, 292, 304, 305, 365, 366, 380, 438, 456, 488, 570, 584, 610, 730, 732, 760, 876, 912, 915, 976, 1095, 1140, 1159, 1168, 1220, 1387, 1460, 1464, 1520, 1752, 1830, 2190, 2280, 2318, 2440, 2774, 2920, 2928, 3477, 3504, 3660, 4161, 4380, 4453, 4560, 4636, 4880, 5548, 5795, 5840, 6935, 6954, 7320, 8322, 8760, 8906, 9272, 11096, 11590, 13359, 13870, 13908, 14640, 16644, 17385, 17520, 17812, 18544, 20805, 22192, 22265, 23180, 26718, 27740, 27816, 33288, 34770, 35624, 41610, 44530, 46360, 53436, 55480, 55632, 66576, 66795, 69540, 71248, 83220, 84607, 89060, 92720, 106872, 110960, 133590, 139080, 166440, 169214, 178120, 213744, 253821, 267180, 278160, 332880, 338428, 356240, 423035, 507642, 534360, 676856, 846070, 1015284, 1068720, 1269105, 1353712, 1692140, 2030568, 2538210, 3384280, 4061136, 5076420, 6768560, 10152840, 20305680]

約数ペア:

[(1, 20305680), (2, 10152840), (3, 6768560), (4, 5076420), (5, 4061136), (6, 3384280), (8, 2538210), (10, 2030568), (12, 1692140), (15, 1353712), (16, 1269105), (19, 1068720), (20, 1015284), (24, 846070), (30, 676856), (38, 534360), (40, 507642), (48, 423035), (57, 356240), (60, 338428), (61, 332880), (73, 278160), (76, 267180), (80, 253821), (95, 213744), (114, 178120), (120, 169214), (122, 166440), (146, 139080), (152, 133590), (183, 110960), (190, 106872), (219, 92720), (228, 89060), (240, 84607), (244, 83220), (285, 71248), (292, 69540), (304, 66795), (305, 66576), (365, 55632), (366, 55480), (380, 53436), (438, 46360), (456, 44530), (488, 41610), (570, 35624), (584, 34770), (610, 33288), (730, 27816), (732, 27740), (760, 26718), (876, 23180), (912, 22265), (915, 22192), (976, 20805), (1095, 18544), (1140, 17812), (1159, 17520), (1168, 17385), (1220, 16644), (1387, 14640), (1460, 13908), (1464, 13870), (1520, 13359), (1752, 11590), (1830, 11096), (2190, 9272), (2280, 8906), (2318, 8760), (2440, 8322), (2774, 7320), (2920, 6954), (2928, 6935), (3477, 5840), (3504, 5795), (3660, 5548), (4161, 4880), (4380, 4636), (4453, 4560)]