1640185820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4153}}^1$

素因数の和:4220

約数の個数: 144

約数和(自身を含む): 4455214848

約数和(自身を除く): 2815029028

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 49, 52, 62, 65, 70, 91, 98, 124, 130, 140, 155, 182, 196, 217, 245, 260, 310, 364, 403, 434, 455, 490, 620, 637, 806, 868, 910, 980, 1085, 1274, 1519, 1612, 1820, 2015, 2170, 2548, 2821, 3038, 3185, 4030, 4153, 4340, 5642, 6076, 6370, 7595, 8060, 8306, 11284, 12740, 14105, 15190, 16612, 19747, 20765, 28210, 29071, 30380, 39494, 41530, 53989, 56420, 58142, 78988, 83060, 98735, 107978, 116284, 128743, 145355, 197470, 203497, 215956, 257486, 269945, 290710, 377923, 394940, 406994, 514972, 539890, 581420, 643715, 755846, 813988, 901201, 1017485, 1079780, 1287430, 1511692, 1673659, 1802402, 1889615, 2034970, 2574860, 2645461, 3347318, 3604804, 3779230, 4069940, 4506005, 5290922, 6308407, 6694636, 7558460, 8368295, 9012010, 10581844, 11715613, 12616814, 13227305, 16736590, 18024020, 23431226, 25233628, 26454610, 31542035, 33473180, 46862452, 52909220, 58578065, 63084070, 82009291, 117156130, 126168140, 164018582, 234312260, 328037164, 410046455, 820092910, 1640185820]

約数ペア:

[(1, 1640185820), (2, 820092910), (4, 410046455), (5, 328037164), (7, 234312260), (10, 164018582), (13, 126168140), (14, 117156130), (20, 82009291), (26, 63084070), (28, 58578065), (31, 52909220), (35, 46862452), (49, 33473180), (52, 31542035), (62, 26454610), (65, 25233628), (70, 23431226), (91, 18024020), (98, 16736590), (124, 13227305), (130, 12616814), (140, 11715613), (155, 10581844), (182, 9012010), (196, 8368295), (217, 7558460), (245, 6694636), (260, 6308407), (310, 5290922), (364, 4506005), (403, 4069940), (434, 3779230), (455, 3604804), (490, 3347318), (620, 2645461), (637, 2574860), (806, 2034970), (868, 1889615), (910, 1802402), (980, 1673659), (1085, 1511692), (1274, 1287430), (1519, 1079780), (1612, 1017485), (1820, 901201), (2015, 813988), (2170, 755846), (2548, 643715), (2821, 581420), (3038, 539890), (3185, 514972), (4030, 406994), (4153, 394940), (4340, 377923), (5642, 290710), (6076, 269945), (6370, 257486), (7595, 215956), (8060, 203497), (8306, 197470), (11284, 145355), (12740, 128743), (14105, 116284), (15190, 107978), (16612, 98735), (19747, 83060), (20765, 78988), (28210, 58142), (29071, 56420), (30380, 53989), (39494, 41530)]