781468740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{641}}^1$

素因数の和:1190

約数の個数: 144

約数和(自身を含む): 2561687856

約数和(自身を除く): 1780219116

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 521, 585, 641, 780, 1042, 1170, 1282, 1563, 1923, 2084, 2340, 2564, 2605, 3126, 3205, 3846, 4689, 5210, 5769, 6252, 6410, 6773, 7692, 7815, 8333, 9378, 9615, 10420, 11538, 12820, 13546, 15630, 16666, 18756, 19230, 20319, 23076, 23445, 24999, 27092, 28845, 31260, 33332, 33865, 38460, 40638, 41665, 46890, 49998, 57690, 60957, 67730, 74997, 81276, 83330, 93780, 99996, 101595, 115380, 121914, 124995, 135460, 149994, 166660, 203190, 243828, 249990, 299988, 304785, 333961, 374985, 406380, 499980, 609570, 667922, 749970, 1001883, 1219140, 1335844, 1499940, 1669805, 2003766, 3005649, 3339610, 4007532, 4341493, 5009415, 6011298, 6679220, 8682986, 10018830, 12022596, 13024479, 15028245, 17365972, 20037660, 21707465, 26048958, 30056490, 39073437, 43414930, 52097916, 60112980, 65122395, 78146874, 86829860, 130244790, 156293748, 195367185, 260489580, 390734370, 781468740]

約数ペア:

[(1, 781468740), (2, 390734370), (3, 260489580), (4, 195367185), (5, 156293748), (6, 130244790), (9, 86829860), (10, 78146874), (12, 65122395), (13, 60112980), (15, 52097916), (18, 43414930), (20, 39073437), (26, 30056490), (30, 26048958), (36, 21707465), (39, 20037660), (45, 17365972), (52, 15028245), (60, 13024479), (65, 12022596), (78, 10018830), (90, 8682986), (117, 6679220), (130, 6011298), (156, 5009415), (180, 4341493), (195, 4007532), (234, 3339610), (260, 3005649), (390, 2003766), (468, 1669805), (521, 1499940), (585, 1335844), (641, 1219140), (780, 1001883), (1042, 749970), (1170, 667922), (1282, 609570), (1563, 499980), (1923, 406380), (2084, 374985), (2340, 333961), (2564, 304785), (2605, 299988), (3126, 249990), (3205, 243828), (3846, 203190), (4689, 166660), (5210, 149994), (5769, 135460), (6252, 124995), (6410, 121914), (6773, 115380), (7692, 101595), (7815, 99996), (8333, 93780), (9378, 83330), (9615, 81276), (10420, 74997), (11538, 67730), (12820, 60957), (13546, 57690), (15630, 49998), (16666, 46890), (18756, 41665), (19230, 40638), (20319, 38460), (23076, 33865), (23445, 33332), (24999, 31260), (27092, 28845)]