31506780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:148

約数の個数: 144

約数和(自身を含む): 99025920

約数和(自身を除く): 67519140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 46, 51, 60, 68, 69, 79, 85, 92, 102, 115, 138, 158, 170, 204, 230, 237, 255, 276, 289, 316, 340, 345, 391, 395, 460, 474, 510, 578, 690, 782, 790, 867, 948, 1020, 1156, 1173, 1185, 1343, 1380, 1445, 1564, 1580, 1734, 1817, 1955, 2346, 2370, 2686, 2890, 3468, 3634, 3910, 4029, 4335, 4692, 4740, 5372, 5451, 5780, 5865, 6647, 6715, 7268, 7820, 8058, 8670, 9085, 10902, 11730, 13294, 13430, 16116, 17340, 18170, 19941, 20145, 21804, 22831, 23460, 26588, 26860, 27255, 30889, 33235, 36340, 39882, 40290, 45662, 54510, 61778, 66470, 68493, 79764, 80580, 91324, 92667, 99705, 109020, 114155, 123556, 132940, 136986, 154445, 185334, 199410, 228310, 273972, 308890, 342465, 370668, 398820, 456620, 463335, 525113, 617780, 684930, 926670, 1050226, 1369860, 1575339, 1853340, 2100452, 2625565, 3150678, 5251130, 6301356, 7876695, 10502260, 15753390, 31506780]

約数ペア:

[(1, 31506780), (2, 15753390), (3, 10502260), (4, 7876695), (5, 6301356), (6, 5251130), (10, 3150678), (12, 2625565), (15, 2100452), (17, 1853340), (20, 1575339), (23, 1369860), (30, 1050226), (34, 926670), (46, 684930), (51, 617780), (60, 525113), (68, 463335), (69, 456620), (79, 398820), (85, 370668), (92, 342465), (102, 308890), (115, 273972), (138, 228310), (158, 199410), (170, 185334), (204, 154445), (230, 136986), (237, 132940), (255, 123556), (276, 114155), (289, 109020), (316, 99705), (340, 92667), (345, 91324), (391, 80580), (395, 79764), (460, 68493), (474, 66470), (510, 61778), (578, 54510), (690, 45662), (782, 40290), (790, 39882), (867, 36340), (948, 33235), (1020, 30889), (1156, 27255), (1173, 26860), (1185, 26588), (1343, 23460), (1380, 22831), (1445, 21804), (1564, 20145), (1580, 19941), (1734, 18170), (1817, 17340), (1955, 16116), (2346, 13430), (2370, 13294), (2686, 11730), (2890, 10902), (3468, 9085), (3634, 8670), (3910, 8058), (4029, 7820), (4335, 7268), (4692, 6715), (4740, 6647), (5372, 5865), (5451, 5780)]