31312980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1$

素因数の和:420

約数の個数: 144

約数和(自身を含む): 104569920

約数和(自身を除く): 73256940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 243, 255, 270, 306, 324, 340, 379, 405, 459, 486, 510, 540, 612, 758, 765, 810, 918, 972, 1020, 1137, 1215, 1377, 1516, 1530, 1620, 1836, 1895, 2274, 2295, 2430, 2754, 3060, 3411, 3790, 4131, 4548, 4590, 4860, 5508, 5685, 6443, 6822, 6885, 7580, 8262, 9180, 10233, 11370, 12886, 13644, 13770, 16524, 17055, 19329, 20466, 20655, 22740, 25772, 27540, 30699, 32215, 34110, 38658, 40932, 41310, 51165, 57987, 61398, 64430, 68220, 77316, 82620, 92097, 96645, 102330, 115974, 122796, 128860, 153495, 173961, 184194, 193290, 204660, 231948, 289935, 306990, 347922, 368388, 386580, 460485, 521883, 579870, 613980, 695844, 869805, 920970, 1043766, 1159740, 1565649, 1739610, 1841940, 2087532, 2609415, 3131298, 3479220, 5218830, 6262596, 7828245, 10437660, 15656490, 31312980]

約数ペア:

[(1, 31312980), (2, 15656490), (3, 10437660), (4, 7828245), (5, 6262596), (6, 5218830), (9, 3479220), (10, 3131298), (12, 2609415), (15, 2087532), (17, 1841940), (18, 1739610), (20, 1565649), (27, 1159740), (30, 1043766), (34, 920970), (36, 869805), (45, 695844), (51, 613980), (54, 579870), (60, 521883), (68, 460485), (81, 386580), (85, 368388), (90, 347922), (102, 306990), (108, 289935), (135, 231948), (153, 204660), (162, 193290), (170, 184194), (180, 173961), (204, 153495), (243, 128860), (255, 122796), (270, 115974), (306, 102330), (324, 96645), (340, 92097), (379, 82620), (405, 77316), (459, 68220), (486, 64430), (510, 61398), (540, 57987), (612, 51165), (758, 41310), (765, 40932), (810, 38658), (918, 34110), (972, 32215), (1020, 30699), (1137, 27540), (1215, 25772), (1377, 22740), (1516, 20655), (1530, 20466), (1620, 19329), (1836, 17055), (1895, 16524), (2274, 13770), (2295, 13644), (2430, 12886), (2754, 11370), (3060, 10233), (3411, 9180), (3790, 8262), (4131, 7580), (4548, 6885), (4590, 6822), (4860, 6443), (5508, 5685)]