18288760

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 128

約数和(自身を含む): 50688000

約数和(自身を除く): 32399240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 43, 49, 56, 62, 70, 86, 98, 124, 140, 155, 172, 196, 215, 217, 245, 248, 280, 301, 310, 343, 344, 392, 430, 434, 490, 602, 620, 686, 860, 868, 980, 1085, 1204, 1240, 1333, 1372, 1505, 1519, 1715, 1720, 1736, 1960, 2107, 2170, 2408, 2666, 2744, 3010, 3038, 3430, 4214, 4340, 5332, 6020, 6076, 6665, 6860, 7595, 8428, 8680, 9331, 10535, 10633, 10664, 12040, 12152, 13330, 13720, 14749, 15190, 16856, 18662, 21070, 21266, 26660, 29498, 30380, 37324, 42140, 42532, 46655, 53165, 53320, 58996, 60760, 65317, 73745, 74648, 84280, 85064, 93310, 106330, 117992, 130634, 147490, 186620, 212660, 261268, 294980, 326585, 373240, 425320, 457219, 522536, 589960, 653170, 914438, 1306340, 1828876, 2286095, 2612680, 3657752, 4572190, 9144380, 18288760]

約数ペア:

[(1, 18288760), (2, 9144380), (4, 4572190), (5, 3657752), (7, 2612680), (8, 2286095), (10, 1828876), (14, 1306340), (20, 914438), (28, 653170), (31, 589960), (35, 522536), (40, 457219), (43, 425320), (49, 373240), (56, 326585), (62, 294980), (70, 261268), (86, 212660), (98, 186620), (124, 147490), (140, 130634), (155, 117992), (172, 106330), (196, 93310), (215, 85064), (217, 84280), (245, 74648), (248, 73745), (280, 65317), (301, 60760), (310, 58996), (343, 53320), (344, 53165), (392, 46655), (430, 42532), (434, 42140), (490, 37324), (602, 30380), (620, 29498), (686, 26660), (860, 21266), (868, 21070), (980, 18662), (1085, 16856), (1204, 15190), (1240, 14749), (1333, 13720), (1372, 13330), (1505, 12152), (1519, 12040), (1715, 10664), (1720, 10633), (1736, 10535), (1960, 9331), (2107, 8680), (2170, 8428), (2408, 7595), (2666, 6860), (2744, 6665), (3010, 6076), (3038, 6020), (3430, 5332), (4214, 4340)]