644946640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:429

約数の個数: 160

約数和(自身を含む): 1719889920

約数和(自身を除く): 1074943280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 127, 130, 152, 190, 208, 247, 254, 257, 260, 304, 380, 494, 508, 514, 520, 635, 760, 988, 1016, 1028, 1040, 1235, 1270, 1285, 1520, 1651, 1976, 2032, 2056, 2413, 2470, 2540, 2570, 3302, 3341, 3952, 4112, 4826, 4883, 4940, 5080, 5140, 6604, 6682, 8255, 9652, 9766, 9880, 10160, 10280, 12065, 13208, 13364, 16510, 16705, 19304, 19532, 19760, 20560, 24130, 24415, 26416, 26728, 31369, 32639, 33020, 33410, 38608, 39064, 48260, 48830, 53456, 62738, 63479, 65278, 66040, 66820, 78128, 96520, 97660, 125476, 126958, 130556, 132080, 133640, 156845, 163195, 193040, 195320, 250952, 253916, 261112, 267280, 313690, 317395, 326390, 390640, 424307, 501904, 507832, 522224, 620141, 627380, 634790, 652780, 848614, 1015664, 1240282, 1254760, 1269580, 1305560, 1697228, 2121535, 2480564, 2509520, 2539160, 2611120, 3100705, 3394456, 4243070, 4961128, 5078320, 6201410, 6788912, 8061833, 8486140, 9922256, 12402820, 16123666, 16972280, 24805640, 32247332, 33944560, 40309165, 49611280, 64494664, 80618330, 128989328, 161236660, 322473320, 644946640]

約数ペア:

[(1, 644946640), (2, 322473320), (4, 161236660), (5, 128989328), (8, 80618330), (10, 64494664), (13, 49611280), (16, 40309165), (19, 33944560), (20, 32247332), (26, 24805640), (38, 16972280), (40, 16123666), (52, 12402820), (65, 9922256), (76, 8486140), (80, 8061833), (95, 6788912), (104, 6201410), (127, 5078320), (130, 4961128), (152, 4243070), (190, 3394456), (208, 3100705), (247, 2611120), (254, 2539160), (257, 2509520), (260, 2480564), (304, 2121535), (380, 1697228), (494, 1305560), (508, 1269580), (514, 1254760), (520, 1240282), (635, 1015664), (760, 848614), (988, 652780), (1016, 634790), (1028, 627380), (1040, 620141), (1235, 522224), (1270, 507832), (1285, 501904), (1520, 424307), (1651, 390640), (1976, 326390), (2032, 317395), (2056, 313690), (2413, 267280), (2470, 261112), (2540, 253916), (2570, 250952), (3302, 195320), (3341, 193040), (3952, 163195), (4112, 156845), (4826, 133640), (4883, 132080), (4940, 130556), (5080, 126958), (5140, 125476), (6604, 97660), (6682, 96520), (8255, 78128), (9652, 66820), (9766, 66040), (9880, 65278), (10160, 63479), (10280, 62738), (12065, 53456), (13208, 48830), (13364, 48260), (16510, 39064), (16705, 38608), (19304, 33410), (19532, 33020), (19760, 32639), (20560, 31369), (24130, 26728), (24415, 26416)]