407428840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{647}}^1$

素因数の和:851

約数の個数: 128

約数和(自身を含む): 1136540160

約数和(自身を除く): 729111320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 173, 182, 260, 280, 346, 364, 455, 520, 647, 692, 728, 865, 910, 1211, 1294, 1384, 1730, 1820, 2249, 2422, 2588, 3235, 3460, 3640, 4498, 4529, 4844, 5176, 6055, 6470, 6920, 8411, 8996, 9058, 9688, 11245, 12110, 12940, 15743, 16822, 17992, 18116, 22490, 22645, 24220, 25880, 31486, 33644, 36232, 42055, 44980, 45290, 48440, 58877, 62972, 67288, 78715, 84110, 89960, 90580, 111931, 117754, 125944, 157430, 168220, 181160, 223862, 235508, 294385, 314860, 336440, 447724, 471016, 559655, 588770, 629720, 783517, 895448, 1119310, 1177540, 1455103, 1567034, 2238620, 2355080, 2910206, 3134068, 3917585, 4477240, 5820412, 6268136, 7275515, 7835170, 10185721, 11640824, 14551030, 15670340, 20371442, 29102060, 31340680, 40742884, 50928605, 58204120, 81485768, 101857210, 203714420, 407428840]

約数ペア:

[(1, 407428840), (2, 203714420), (4, 101857210), (5, 81485768), (7, 58204120), (8, 50928605), (10, 40742884), (13, 31340680), (14, 29102060), (20, 20371442), (26, 15670340), (28, 14551030), (35, 11640824), (40, 10185721), (52, 7835170), (56, 7275515), (65, 6268136), (70, 5820412), (91, 4477240), (104, 3917585), (130, 3134068), (140, 2910206), (173, 2355080), (182, 2238620), (260, 1567034), (280, 1455103), (346, 1177540), (364, 1119310), (455, 895448), (520, 783517), (647, 629720), (692, 588770), (728, 559655), (865, 471016), (910, 447724), (1211, 336440), (1294, 314860), (1384, 294385), (1730, 235508), (1820, 223862), (2249, 181160), (2422, 168220), (2588, 157430), (3235, 125944), (3460, 117754), (3640, 111931), (4498, 90580), (4529, 89960), (4844, 84110), (5176, 78715), (6055, 67288), (6470, 62972), (6920, 58877), (8411, 48440), (8996, 45290), (9058, 44980), (9688, 42055), (11245, 36232), (12110, 33644), (12940, 31486), (15743, 25880), (16822, 24220), (17992, 22645), (18116, 22490)]