31667940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 103783680

約数和(自身を除く): 72115740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 79, 85, 90, 102, 131, 153, 158, 170, 180, 204, 237, 255, 262, 306, 316, 340, 393, 395, 474, 510, 524, 612, 655, 711, 765, 786, 790, 948, 1020, 1179, 1185, 1310, 1343, 1422, 1530, 1572, 1580, 1965, 2227, 2358, 2370, 2620, 2686, 2844, 3060, 3555, 3930, 4029, 4454, 4716, 4740, 5372, 5895, 6681, 6715, 7110, 7860, 8058, 8908, 10349, 11135, 11790, 12087, 13362, 13430, 14220, 16116, 20043, 20145, 20698, 22270, 23580, 24174, 26724, 26860, 31047, 33405, 40086, 40290, 41396, 44540, 48348, 51745, 60435, 62094, 66810, 80172, 80580, 93141, 100215, 103490, 120870, 124188, 133620, 155235, 175933, 186282, 200430, 206980, 241740, 310470, 351866, 372564, 400860, 465705, 527799, 620940, 703732, 879665, 931410, 1055598, 1583397, 1759330, 1862820, 2111196, 2638995, 3166794, 3518660, 5277990, 6333588, 7916985, 10555980, 15833970, 31667940]

約数ペア:

[(1, 31667940), (2, 15833970), (3, 10555980), (4, 7916985), (5, 6333588), (6, 5277990), (9, 3518660), (10, 3166794), (12, 2638995), (15, 2111196), (17, 1862820), (18, 1759330), (20, 1583397), (30, 1055598), (34, 931410), (36, 879665), (45, 703732), (51, 620940), (60, 527799), (68, 465705), (79, 400860), (85, 372564), (90, 351866), (102, 310470), (131, 241740), (153, 206980), (158, 200430), (170, 186282), (180, 175933), (204, 155235), (237, 133620), (255, 124188), (262, 120870), (306, 103490), (316, 100215), (340, 93141), (393, 80580), (395, 80172), (474, 66810), (510, 62094), (524, 60435), (612, 51745), (655, 48348), (711, 44540), (765, 41396), (786, 40290), (790, 40086), (948, 33405), (1020, 31047), (1179, 26860), (1185, 26724), (1310, 24174), (1343, 23580), (1422, 22270), (1530, 20698), (1572, 20145), (1580, 20043), (1965, 16116), (2227, 14220), (2358, 13430), (2370, 13362), (2620, 12087), (2686, 11790), (2844, 11135), (3060, 10349), (3555, 8908), (3930, 8058), (4029, 7860), (4454, 7110), (4716, 6715), (4740, 6681), (5372, 5895)]