1256403460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{503}}^1\times {\mathrm{739}}^1$

素因数の和:1277

約数の個数: 72

約数和(自身を含む): 2866570560

約数和(自身を除く): 1610167100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 503, 676, 739, 845, 1006, 1478, 1690, 2012, 2515, 2956, 3380, 3695, 5030, 6539, 7390, 9607, 10060, 13078, 14780, 19214, 26156, 32695, 38428, 48035, 65390, 85007, 96070, 124891, 130780, 170014, 192140, 249782, 340028, 371717, 425035, 499564, 624455, 743434, 850070, 1248910, 1486868, 1700140, 1858585, 2497820, 3717170, 4832321, 7434340, 9664642, 19329284, 24161605, 48323210, 62820173, 96646420, 125640346, 251280692, 314100865, 628201730, 1256403460]

約数ペア:

[(1, 1256403460), (2, 628201730), (4, 314100865), (5, 251280692), (10, 125640346), (13, 96646420), (20, 62820173), (26, 48323210), (52, 24161605), (65, 19329284), (130, 9664642), (169, 7434340), (260, 4832321), (338, 3717170), (503, 2497820), (676, 1858585), (739, 1700140), (845, 1486868), (1006, 1248910), (1478, 850070), (1690, 743434), (2012, 624455), (2515, 499564), (2956, 425035), (3380, 371717), (3695, 340028), (5030, 249782), (6539, 192140), (7390, 170014), (9607, 130780), (10060, 124891), (13078, 96070), (14780, 85007), (19214, 65390), (26156, 48035), (32695, 38428)]