20620650

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 54996480

約数和(自身を除く): 34375830

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 25, 30, 43, 46, 50, 69, 75, 86, 115, 129, 138, 139, 150, 215, 230, 258, 278, 345, 417, 430, 575, 645, 690, 695, 834, 989, 1075, 1150, 1290, 1390, 1725, 1978, 2085, 2150, 2967, 3197, 3225, 3450, 3475, 4170, 4945, 5934, 5977, 6394, 6450, 6950, 9591, 9890, 10425, 11954, 14835, 15985, 17931, 19182, 20850, 24725, 29670, 29885, 31970, 35862, 47955, 49450, 59770, 74175, 79925, 89655, 95910, 137471, 148350, 149425, 159850, 179310, 239775, 274942, 298850, 412413, 448275, 479550, 687355, 824826, 896550, 1374710, 2062065, 3436775, 4124130, 6873550, 10310325, 20620650]

約数ペア:

[(1, 20620650), (2, 10310325), (3, 6873550), (5, 4124130), (6, 3436775), (10, 2062065), (15, 1374710), (23, 896550), (25, 824826), (30, 687355), (43, 479550), (46, 448275), (50, 412413), (69, 298850), (75, 274942), (86, 239775), (115, 179310), (129, 159850), (138, 149425), (139, 148350), (150, 137471), (215, 95910), (230, 89655), (258, 79925), (278, 74175), (345, 59770), (417, 49450), (430, 47955), (575, 35862), (645, 31970), (690, 29885), (695, 29670), (834, 24725), (989, 20850), (1075, 19182), (1150, 17931), (1290, 15985), (1390, 14835), (1725, 11954), (1978, 10425), (2085, 9890), (2150, 9591), (2967, 6950), (3197, 6450), (3225, 6394), (3450, 5977), (3475, 5934), (4170, 4945)]