19765220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{953}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 44715888

約数和(自身を除く): 24950668

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 61, 68, 85, 122, 170, 244, 305, 340, 610, 953, 1037, 1220, 1906, 2074, 3812, 4148, 4765, 5185, 9530, 10370, 16201, 19060, 20740, 32402, 58133, 64804, 81005, 116266, 162010, 232532, 290665, 324020, 581330, 988261, 1162660, 1976522, 3953044, 4941305, 9882610, 19765220]

約数ペア:

[(1, 19765220), (2, 9882610), (4, 4941305), (5, 3953044), (10, 1976522), (17, 1162660), (20, 988261), (34, 581330), (61, 324020), (68, 290665), (85, 232532), (122, 162010), (170, 116266), (244, 81005), (305, 64804), (340, 58133), (610, 32402), (953, 20740), (1037, 19060), (1220, 16201), (1906, 10370), (2074, 9530), (3812, 5185), (4148, 4765)]