19744140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1489}}^1$

素因数の和:1531

約数の個数: 96

約数和(自身を含む): 63080640

約数和(自身を除く): 43336500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 1489, 2210, 2652, 2978, 3315, 4420, 4467, 5956, 6630, 7445, 8934, 13260, 14890, 17868, 19357, 22335, 25313, 29780, 38714, 44670, 50626, 58071, 75939, 77428, 89340, 96785, 101252, 116142, 126565, 151878, 193570, 232284, 253130, 290355, 303756, 329069, 379695, 387140, 506260, 580710, 658138, 759390, 987207, 1161420, 1316276, 1518780, 1645345, 1974414, 3290690, 3948828, 4936035, 6581380, 9872070, 19744140]

約数ペア:

[(1, 19744140), (2, 9872070), (3, 6581380), (4, 4936035), (5, 3948828), (6, 3290690), (10, 1974414), (12, 1645345), (13, 1518780), (15, 1316276), (17, 1161420), (20, 987207), (26, 759390), (30, 658138), (34, 580710), (39, 506260), (51, 387140), (52, 379695), (60, 329069), (65, 303756), (68, 290355), (78, 253130), (85, 232284), (102, 193570), (130, 151878), (156, 126565), (170, 116142), (195, 101252), (204, 96785), (221, 89340), (255, 77428), (260, 75939), (340, 58071), (390, 50626), (442, 44670), (510, 38714), (663, 29780), (780, 25313), (884, 22335), (1020, 19357), (1105, 17868), (1326, 14890), (1489, 13260), (2210, 8934), (2652, 7445), (2978, 6630), (3315, 5956), (4420, 4467)]