31415220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 144

約数和(自身を含む): 100835280

約数和(自身を除く): 69420060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 53, 60, 74, 89, 90, 106, 111, 148, 159, 178, 180, 185, 212, 222, 265, 267, 318, 333, 356, 370, 444, 445, 477, 530, 534, 555, 636, 666, 740, 795, 801, 890, 954, 1060, 1068, 1110, 1332, 1335, 1590, 1602, 1665, 1780, 1908, 1961, 2220, 2385, 2670, 3180, 3204, 3293, 3330, 3922, 4005, 4717, 4770, 5340, 5883, 6586, 6660, 7844, 8010, 9434, 9540, 9805, 9879, 11766, 13172, 14151, 16020, 16465, 17649, 18868, 19610, 19758, 23532, 23585, 28302, 29415, 29637, 32930, 35298, 39220, 39516, 42453, 47170, 49395, 56604, 58830, 59274, 65860, 70596, 70755, 84906, 88245, 94340, 98790, 117660, 118548, 141510, 148185, 169812, 174529, 176490, 197580, 212265, 283020, 296370, 349058, 352980, 424530, 523587, 592740, 698116, 849060, 872645, 1047174, 1570761, 1745290, 2094348, 2617935, 3141522, 3490580, 5235870, 6283044, 7853805, 10471740, 15707610, 31415220]

約数ペア:

[(1, 31415220), (2, 15707610), (3, 10471740), (4, 7853805), (5, 6283044), (6, 5235870), (9, 3490580), (10, 3141522), (12, 2617935), (15, 2094348), (18, 1745290), (20, 1570761), (30, 1047174), (36, 872645), (37, 849060), (45, 698116), (53, 592740), (60, 523587), (74, 424530), (89, 352980), (90, 349058), (106, 296370), (111, 283020), (148, 212265), (159, 197580), (178, 176490), (180, 174529), (185, 169812), (212, 148185), (222, 141510), (265, 118548), (267, 117660), (318, 98790), (333, 94340), (356, 88245), (370, 84906), (444, 70755), (445, 70596), (477, 65860), (530, 59274), (534, 58830), (555, 56604), (636, 49395), (666, 47170), (740, 42453), (795, 39516), (801, 39220), (890, 35298), (954, 32930), (1060, 29637), (1068, 29415), (1110, 28302), (1332, 23585), (1335, 23532), (1590, 19758), (1602, 19610), (1665, 18868), (1780, 17649), (1908, 16465), (1961, 16020), (2220, 14151), (2385, 13172), (2670, 11766), (3180, 9879), (3204, 9805), (3293, 9540), (3330, 9434), (3922, 8010), (4005, 7844), (4717, 6660), (4770, 6586), (5340, 5883)]