81658480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{619}}^1$

素因数の和:746

約数の個数: 80

約数和(自身を含む): 203424480

約数和(自身を除く): 121766000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 97, 136, 170, 194, 272, 340, 388, 485, 619, 680, 776, 970, 1238, 1360, 1552, 1649, 1940, 2476, 3095, 3298, 3880, 4952, 6190, 6596, 7760, 8245, 9904, 10523, 12380, 13192, 16490, 21046, 24760, 26384, 32980, 42092, 49520, 52615, 60043, 65960, 84184, 105230, 120086, 131920, 168368, 210460, 240172, 300215, 420920, 480344, 600430, 841840, 960688, 1020731, 1200860, 2041462, 2401720, 4082924, 4803440, 5103655, 8165848, 10207310, 16331696, 20414620, 40829240, 81658480]

約数ペア:

[(1, 81658480), (2, 40829240), (4, 20414620), (5, 16331696), (8, 10207310), (10, 8165848), (16, 5103655), (17, 4803440), (20, 4082924), (34, 2401720), (40, 2041462), (68, 1200860), (80, 1020731), (85, 960688), (97, 841840), (136, 600430), (170, 480344), (194, 420920), (272, 300215), (340, 240172), (388, 210460), (485, 168368), (619, 131920), (680, 120086), (776, 105230), (970, 84184), (1238, 65960), (1360, 60043), (1552, 52615), (1649, 49520), (1940, 42092), (2476, 32980), (3095, 26384), (3298, 24760), (3880, 21046), (4952, 16490), (6190, 13192), (6596, 12380), (7760, 10523), (8245, 9904)]