40688120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 109209600

約数和(自身を除く): 68521480

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 31, 38, 40, 44, 55, 62, 76, 88, 95, 110, 124, 152, 155, 157, 190, 209, 220, 248, 310, 314, 341, 380, 418, 440, 589, 620, 628, 682, 760, 785, 836, 1045, 1178, 1240, 1256, 1364, 1570, 1672, 1705, 1727, 2090, 2356, 2728, 2945, 2983, 3140, 3410, 3454, 4180, 4712, 4867, 5890, 5966, 6280, 6479, 6820, 6908, 8360, 8635, 9734, 11780, 11932, 12958, 13640, 13816, 14915, 17270, 19468, 23560, 23864, 24335, 25916, 29830, 32395, 32813, 34540, 38936, 48670, 51832, 53537, 59660, 64790, 65626, 69080, 92473, 97340, 107074, 119320, 129580, 131252, 164065, 184946, 194680, 214148, 259160, 262504, 267685, 328130, 369892, 428296, 462365, 535370, 656260, 739784, 924730, 1017203, 1070740, 1312520, 1849460, 2034406, 2141480, 3698920, 4068812, 5086015, 8137624, 10172030, 20344060, 40688120]

約数ペア:

[(1, 40688120), (2, 20344060), (4, 10172030), (5, 8137624), (8, 5086015), (10, 4068812), (11, 3698920), (19, 2141480), (20, 2034406), (22, 1849460), (31, 1312520), (38, 1070740), (40, 1017203), (44, 924730), (55, 739784), (62, 656260), (76, 535370), (88, 462365), (95, 428296), (110, 369892), (124, 328130), (152, 267685), (155, 262504), (157, 259160), (190, 214148), (209, 194680), (220, 184946), (248, 164065), (310, 131252), (314, 129580), (341, 119320), (380, 107074), (418, 97340), (440, 92473), (589, 69080), (620, 65626), (628, 64790), (682, 59660), (760, 53537), (785, 51832), (836, 48670), (1045, 38936), (1178, 34540), (1240, 32813), (1256, 32395), (1364, 29830), (1570, 25916), (1672, 24335), (1705, 23864), (1727, 23560), (2090, 19468), (2356, 17270), (2728, 14915), (2945, 13816), (2983, 13640), (3140, 12958), (3410, 11932), (3454, 11780), (4180, 9734), (4712, 8635), (4867, 8360), (5890, 6908), (5966, 6820), (6280, 6479)]