31213980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{3539}}^1$

素因数の和:3568

約数の個数: 108

約数和(自身を含む): 110171880

約数和(自身を除く): 78957900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 3539, 4410, 7078, 8820, 10617, 14156, 17695, 21234, 24773, 31851, 35390, 42468, 49546, 53085, 63702, 70780, 74319, 99092, 106170, 123865, 127404, 148638, 159255, 173411, 212340, 222957, 247730, 297276, 318510, 346822, 371595, 445914, 495460, 520233, 637020, 693644, 743190, 867055, 891828, 1040466, 1114785, 1486380, 1560699, 1734110, 2080932, 2229570, 2601165, 3121398, 3468220, 4459140, 5202330, 6242796, 7803495, 10404660, 15606990, 31213980]

約数ペア:

[(1, 31213980), (2, 15606990), (3, 10404660), (4, 7803495), (5, 6242796), (6, 5202330), (7, 4459140), (9, 3468220), (10, 3121398), (12, 2601165), (14, 2229570), (15, 2080932), (18, 1734110), (20, 1560699), (21, 1486380), (28, 1114785), (30, 1040466), (35, 891828), (36, 867055), (42, 743190), (45, 693644), (49, 637020), (60, 520233), (63, 495460), (70, 445914), (84, 371595), (90, 346822), (98, 318510), (105, 297276), (126, 247730), (140, 222957), (147, 212340), (180, 173411), (196, 159255), (210, 148638), (245, 127404), (252, 123865), (294, 106170), (315, 99092), (420, 74319), (441, 70780), (490, 63702), (588, 53085), (630, 49546), (735, 42468), (882, 35390), (980, 31851), (1260, 24773), (1470, 21234), (1764, 17695), (2205, 14156), (2940, 10617), (3539, 8820), (4410, 7078)]