857890280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2801}}^1$

素因数の和:2875

約数の個数: 128

約数和(自身を含む): 2259532800

約数和(自身を除く): 1401642520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 31, 38, 40, 52, 62, 65, 76, 95, 104, 124, 130, 152, 155, 190, 247, 248, 260, 310, 380, 403, 494, 520, 589, 620, 760, 806, 988, 1178, 1235, 1240, 1612, 1976, 2015, 2356, 2470, 2801, 2945, 3224, 4030, 4712, 4940, 5602, 5890, 7657, 8060, 9880, 11204, 11780, 14005, 15314, 16120, 22408, 23560, 28010, 30628, 36413, 38285, 53219, 56020, 61256, 72826, 76570, 86831, 106438, 112040, 145652, 153140, 173662, 182065, 212876, 266095, 291304, 306280, 347324, 364130, 425752, 434155, 532190, 691847, 694648, 728260, 868310, 1064380, 1128803, 1383694, 1456520, 1649789, 1736620, 2128760, 2257606, 2767388, 3299578, 3459235, 3473240, 4515212, 5534776, 5644015, 6599156, 6918470, 8248945, 9030424, 11288030, 13198312, 13836940, 16497890, 21447257, 22576060, 27673880, 32995780, 42894514, 45152120, 65991560, 85789028, 107236285, 171578056, 214472570, 428945140, 857890280]

約数ペア:

[(1, 857890280), (2, 428945140), (4, 214472570), (5, 171578056), (8, 107236285), (10, 85789028), (13, 65991560), (19, 45152120), (20, 42894514), (26, 32995780), (31, 27673880), (38, 22576060), (40, 21447257), (52, 16497890), (62, 13836940), (65, 13198312), (76, 11288030), (95, 9030424), (104, 8248945), (124, 6918470), (130, 6599156), (152, 5644015), (155, 5534776), (190, 4515212), (247, 3473240), (248, 3459235), (260, 3299578), (310, 2767388), (380, 2257606), (403, 2128760), (494, 1736620), (520, 1649789), (589, 1456520), (620, 1383694), (760, 1128803), (806, 1064380), (988, 868310), (1178, 728260), (1235, 694648), (1240, 691847), (1612, 532190), (1976, 434155), (2015, 425752), (2356, 364130), (2470, 347324), (2801, 306280), (2945, 291304), (3224, 266095), (4030, 212876), (4712, 182065), (4940, 173662), (5602, 153140), (5890, 145652), (7657, 112040), (8060, 106438), (9880, 86831), (11204, 76570), (11780, 72826), (14005, 61256), (15314, 56020), (16120, 53219), (22408, 38285), (23560, 36413), (28010, 30628)]