278247320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:517

約数の個数: 128

約数和(自身を含む): 714631680

約数和(自身を除く): 436384360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 41, 52, 62, 65, 82, 104, 124, 130, 155, 164, 205, 248, 260, 310, 328, 403, 410, 421, 520, 533, 620, 806, 820, 842, 1066, 1240, 1271, 1612, 1640, 1684, 2015, 2105, 2132, 2542, 2665, 3224, 3368, 4030, 4210, 4264, 5084, 5330, 5473, 6355, 8060, 8420, 10168, 10660, 10946, 12710, 13051, 16120, 16523, 16840, 17261, 21320, 21892, 25420, 26102, 27365, 33046, 34522, 43784, 50840, 52204, 54730, 65255, 66092, 69044, 82615, 86305, 104408, 109460, 130510, 132184, 138088, 165230, 169663, 172610, 218920, 224393, 261020, 330460, 339326, 345220, 448786, 522040, 535091, 660920, 678652, 690440, 848315, 897572, 1070182, 1121965, 1357304, 1696630, 1795144, 2140364, 2243930, 2675455, 3393260, 4280728, 4487860, 5350910, 6786520, 6956183, 8975720, 10701820, 13912366, 21403640, 27824732, 34780915, 55649464, 69561830, 139123660, 278247320]

約数ペア:

[(1, 278247320), (2, 139123660), (4, 69561830), (5, 55649464), (8, 34780915), (10, 27824732), (13, 21403640), (20, 13912366), (26, 10701820), (31, 8975720), (40, 6956183), (41, 6786520), (52, 5350910), (62, 4487860), (65, 4280728), (82, 3393260), (104, 2675455), (124, 2243930), (130, 2140364), (155, 1795144), (164, 1696630), (205, 1357304), (248, 1121965), (260, 1070182), (310, 897572), (328, 848315), (403, 690440), (410, 678652), (421, 660920), (520, 535091), (533, 522040), (620, 448786), (806, 345220), (820, 339326), (842, 330460), (1066, 261020), (1240, 224393), (1271, 218920), (1612, 172610), (1640, 169663), (1684, 165230), (2015, 138088), (2105, 132184), (2132, 130510), (2542, 109460), (2665, 104408), (3224, 86305), (3368, 82615), (4030, 69044), (4210, 66092), (4264, 65255), (5084, 54730), (5330, 52204), (5473, 50840), (6355, 43784), (8060, 34522), (8420, 33046), (10168, 27365), (10660, 26102), (10946, 25420), (12710, 21892), (13051, 21320), (16120, 17261), (16523, 16840)]