18943960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2333}}^1$

素因数の和:2380

約数の個数: 64

約数和(自身を含む): 50414400

約数和(自身を除く): 31470440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2333, 4060, 4666, 8120, 9332, 11665, 16331, 18664, 23330, 32662, 46660, 65324, 67657, 81655, 93320, 130648, 135314, 163310, 270628, 326620, 338285, 473599, 541256, 653240, 676570, 947198, 1353140, 1894396, 2367995, 2706280, 3788792, 4735990, 9471980, 18943960]

約数ペア:

[(1, 18943960), (2, 9471980), (4, 4735990), (5, 3788792), (7, 2706280), (8, 2367995), (10, 1894396), (14, 1353140), (20, 947198), (28, 676570), (29, 653240), (35, 541256), (40, 473599), (56, 338285), (58, 326620), (70, 270628), (116, 163310), (140, 135314), (145, 130648), (203, 93320), (232, 81655), (280, 67657), (290, 65324), (406, 46660), (580, 32662), (812, 23330), (1015, 18664), (1160, 16331), (1624, 11665), (2030, 9332), (2333, 8120), (4060, 4666)]