19904850

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 144

約数和(自身を含む): 62674560

約数和(自身を除く): 42769710

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 50, 63, 70, 71, 75, 89, 90, 105, 126, 142, 150, 175, 178, 210, 213, 225, 267, 315, 350, 355, 426, 445, 450, 497, 525, 534, 623, 630, 639, 710, 801, 890, 994, 1050, 1065, 1246, 1278, 1335, 1491, 1575, 1602, 1775, 1869, 2130, 2225, 2485, 2670, 2982, 3115, 3150, 3195, 3550, 3738, 4005, 4450, 4473, 4970, 5325, 5607, 6230, 6319, 6390, 6675, 7455, 8010, 8946, 9345, 10650, 11214, 12425, 12638, 13350, 14910, 15575, 15975, 18690, 18957, 20025, 22365, 24850, 28035, 31150, 31595, 31950, 37275, 37914, 40050, 44233, 44730, 46725, 56070, 56871, 63190, 74550, 88466, 93450, 94785, 111825, 113742, 132699, 140175, 157975, 189570, 221165, 223650, 265398, 280350, 284355, 315950, 398097, 442330, 473925, 568710, 663495, 796194, 947850, 1105825, 1326990, 1421775, 1990485, 2211650, 2843550, 3317475, 3980970, 6634950, 9952425, 19904850]

約数ペア:

[(1, 19904850), (2, 9952425), (3, 6634950), (5, 3980970), (6, 3317475), (7, 2843550), (9, 2211650), (10, 1990485), (14, 1421775), (15, 1326990), (18, 1105825), (21, 947850), (25, 796194), (30, 663495), (35, 568710), (42, 473925), (45, 442330), (50, 398097), (63, 315950), (70, 284355), (71, 280350), (75, 265398), (89, 223650), (90, 221165), (105, 189570), (126, 157975), (142, 140175), (150, 132699), (175, 113742), (178, 111825), (210, 94785), (213, 93450), (225, 88466), (267, 74550), (315, 63190), (350, 56871), (355, 56070), (426, 46725), (445, 44730), (450, 44233), (497, 40050), (525, 37914), (534, 37275), (623, 31950), (630, 31595), (639, 31150), (710, 28035), (801, 24850), (890, 22365), (994, 20025), (1050, 18957), (1065, 18690), (1246, 15975), (1278, 15575), (1335, 14910), (1491, 13350), (1575, 12638), (1602, 12425), (1775, 11214), (1869, 10650), (2130, 9345), (2225, 8946), (2485, 8010), (2670, 7455), (2982, 6675), (3115, 6390), (3150, 6319), (3195, 6230), (3550, 5607), (3738, 5325), (4005, 4970), (4450, 4473)]