20581470

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{359}}^1$

素因数の和:399

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 46642050

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 49, 63, 65, 70, 78, 90, 91, 98, 105, 117, 126, 130, 147, 182, 195, 210, 234, 245, 273, 294, 315, 359, 390, 441, 455, 490, 546, 585, 630, 637, 718, 735, 819, 882, 910, 1077, 1170, 1274, 1365, 1470, 1638, 1795, 1911, 2154, 2205, 2513, 2730, 3185, 3231, 3590, 3822, 4095, 4410, 4667, 5026, 5385, 5733, 6370, 6462, 7539, 8190, 9334, 9555, 10770, 11466, 12565, 14001, 15078, 16155, 17591, 19110, 22617, 23335, 25130, 28002, 28665, 32310, 32669, 35182, 37695, 42003, 45234, 46670, 52773, 57330, 65338, 70005, 75390, 84006, 87955, 98007, 105546, 113085, 140010, 158319, 163345, 175910, 196014, 210015, 226170, 228683, 263865, 294021, 316638, 326690, 420030, 457366, 490035, 527730, 588042, 686049, 791595, 980070, 1143415, 1372098, 1470105, 1583190, 2058147, 2286830, 2940210, 3430245, 4116294, 6860490, 10290735, 20581470]

約数ペア:

[(1, 20581470), (2, 10290735), (3, 6860490), (5, 4116294), (6, 3430245), (7, 2940210), (9, 2286830), (10, 2058147), (13, 1583190), (14, 1470105), (15, 1372098), (18, 1143415), (21, 980070), (26, 791595), (30, 686049), (35, 588042), (39, 527730), (42, 490035), (45, 457366), (49, 420030), (63, 326690), (65, 316638), (70, 294021), (78, 263865), (90, 228683), (91, 226170), (98, 210015), (105, 196014), (117, 175910), (126, 163345), (130, 158319), (147, 140010), (182, 113085), (195, 105546), (210, 98007), (234, 87955), (245, 84006), (273, 75390), (294, 70005), (315, 65338), (359, 57330), (390, 52773), (441, 46670), (455, 45234), (490, 42003), (546, 37695), (585, 35182), (630, 32669), (637, 32310), (718, 28665), (735, 28002), (819, 25130), (882, 23335), (910, 22617), (1077, 19110), (1170, 17591), (1274, 16155), (1365, 15078), (1470, 14001), (1638, 12565), (1795, 11466), (1911, 10770), (2154, 9555), (2205, 9334), (2513, 8190), (2730, 7539), (3185, 6462), (3231, 6370), (3590, 5733), (3822, 5385), (4095, 5026), (4410, 4667)]