19380920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:145

約数の個数: 96

約数和(自身を含む): 49014720

約数和(自身を除く): 29633800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 61, 65, 94, 104, 122, 130, 169, 188, 235, 244, 260, 305, 338, 376, 470, 488, 520, 610, 611, 676, 793, 845, 940, 1220, 1222, 1352, 1586, 1690, 1880, 2440, 2444, 2867, 3055, 3172, 3380, 3965, 4888, 5734, 6110, 6344, 6760, 7930, 7943, 10309, 11468, 12220, 14335, 15860, 15886, 20618, 22936, 24440, 28670, 31720, 31772, 37271, 39715, 41236, 51545, 57340, 63544, 74542, 79430, 82472, 103090, 114680, 149084, 158860, 186355, 206180, 298168, 317720, 372710, 412360, 484523, 745420, 969046, 1490840, 1938092, 2422615, 3876184, 4845230, 9690460, 19380920]

約数ペア:

[(1, 19380920), (2, 9690460), (4, 4845230), (5, 3876184), (8, 2422615), (10, 1938092), (13, 1490840), (20, 969046), (26, 745420), (40, 484523), (47, 412360), (52, 372710), (61, 317720), (65, 298168), (94, 206180), (104, 186355), (122, 158860), (130, 149084), (169, 114680), (188, 103090), (235, 82472), (244, 79430), (260, 74542), (305, 63544), (338, 57340), (376, 51545), (470, 41236), (488, 39715), (520, 37271), (610, 31772), (611, 31720), (676, 28670), (793, 24440), (845, 22936), (940, 20618), (1220, 15886), (1222, 15860), (1352, 14335), (1586, 12220), (1690, 11468), (1880, 10309), (2440, 7943), (2444, 7930), (2867, 6760), (3055, 6344), (3172, 6110), (3380, 5734), (3965, 4888)]