18478980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 61916400

約数和(自身を除く): 43437420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 53, 60, 65, 78, 90, 106, 117, 130, 149, 156, 159, 180, 195, 212, 234, 260, 265, 298, 318, 390, 447, 468, 477, 530, 585, 596, 636, 689, 745, 780, 795, 894, 954, 1060, 1170, 1341, 1378, 1490, 1590, 1788, 1908, 1937, 2067, 2235, 2340, 2385, 2682, 2756, 2980, 3180, 3445, 3874, 4134, 4470, 4770, 5364, 5811, 6201, 6705, 6890, 7748, 7897, 8268, 8940, 9540, 9685, 10335, 11622, 12402, 13410, 13780, 15794, 17433, 19370, 20670, 23244, 23691, 24804, 26820, 29055, 31005, 31588, 34866, 38740, 39485, 41340, 47382, 58110, 62010, 69732, 71073, 78970, 87165, 94764, 102661, 116220, 118455, 124020, 142146, 157940, 174330, 205322, 236910, 284292, 307983, 348660, 355365, 410644, 473820, 513305, 615966, 710730, 923949, 1026610, 1231932, 1421460, 1539915, 1847898, 2053220, 3079830, 3695796, 4619745, 6159660, 9239490, 18478980]

約数ペア:

[(1, 18478980), (2, 9239490), (3, 6159660), (4, 4619745), (5, 3695796), (6, 3079830), (9, 2053220), (10, 1847898), (12, 1539915), (13, 1421460), (15, 1231932), (18, 1026610), (20, 923949), (26, 710730), (30, 615966), (36, 513305), (39, 473820), (45, 410644), (52, 355365), (53, 348660), (60, 307983), (65, 284292), (78, 236910), (90, 205322), (106, 174330), (117, 157940), (130, 142146), (149, 124020), (156, 118455), (159, 116220), (180, 102661), (195, 94764), (212, 87165), (234, 78970), (260, 71073), (265, 69732), (298, 62010), (318, 58110), (390, 47382), (447, 41340), (468, 39485), (477, 38740), (530, 34866), (585, 31588), (596, 31005), (636, 29055), (689, 26820), (745, 24804), (780, 23691), (795, 23244), (894, 20670), (954, 19370), (1060, 17433), (1170, 15794), (1341, 13780), (1378, 13410), (1490, 12402), (1590, 11622), (1788, 10335), (1908, 9685), (1937, 9540), (2067, 8940), (2235, 8268), (2340, 7897), (2385, 7748), (2682, 6890), (2756, 6705), (2980, 6201), (3180, 5811), (3445, 5364), (3874, 4770), (4134, 4470)]