18540990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:115

約数の個数: 144

約数和(自身を含む): 55497312

約数和(自身を除く): 36956322

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 23, 26, 30, 39, 45, 46, 53, 65, 69, 78, 90, 106, 115, 117, 130, 138, 159, 169, 195, 207, 230, 234, 265, 299, 318, 338, 345, 390, 414, 477, 507, 530, 585, 598, 689, 690, 795, 845, 897, 954, 1014, 1035, 1170, 1219, 1378, 1495, 1521, 1590, 1690, 1794, 2067, 2070, 2385, 2438, 2535, 2691, 2990, 3042, 3445, 3657, 3887, 4134, 4485, 4770, 5070, 5382, 6095, 6201, 6890, 7314, 7605, 7774, 8957, 8970, 10335, 10971, 11661, 12190, 12402, 13455, 15210, 15847, 17914, 18285, 19435, 20670, 21942, 23322, 26871, 26910, 31005, 31694, 34983, 36570, 38870, 44785, 47541, 53742, 54855, 58305, 62010, 69966, 79235, 80613, 89570, 95082, 109710, 116610, 134355, 142623, 158470, 161226, 174915, 206011, 237705, 268710, 285246, 349830, 403065, 412022, 475410, 618033, 713115, 806130, 1030055, 1236066, 1426230, 1854099, 2060110, 3090165, 3708198, 6180330, 9270495, 18540990]

約数ペア:

[(1, 18540990), (2, 9270495), (3, 6180330), (5, 3708198), (6, 3090165), (9, 2060110), (10, 1854099), (13, 1426230), (15, 1236066), (18, 1030055), (23, 806130), (26, 713115), (30, 618033), (39, 475410), (45, 412022), (46, 403065), (53, 349830), (65, 285246), (69, 268710), (78, 237705), (90, 206011), (106, 174915), (115, 161226), (117, 158470), (130, 142623), (138, 134355), (159, 116610), (169, 109710), (195, 95082), (207, 89570), (230, 80613), (234, 79235), (265, 69966), (299, 62010), (318, 58305), (338, 54855), (345, 53742), (390, 47541), (414, 44785), (477, 38870), (507, 36570), (530, 34983), (585, 31694), (598, 31005), (689, 26910), (690, 26871), (795, 23322), (845, 21942), (897, 20670), (954, 19435), (1014, 18285), (1035, 17914), (1170, 15847), (1219, 15210), (1378, 13455), (1495, 12402), (1521, 12190), (1590, 11661), (1690, 10971), (1794, 10335), (2067, 8970), (2070, 8957), (2385, 7774), (2438, 7605), (2535, 7314), (2691, 6890), (2990, 6201), (3042, 6095), (3445, 5382), (3657, 5070), (3887, 4770), (4134, 4485)]