21388380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1613}}^1$

素因数の和:1655

約数の個数: 96

約数和(自身を含む): 68330304

約数和(自身を除く): 46941924

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, 1613, 2210, 2652, 3226, 3315, 4420, 4839, 6452, 6630, 8065, 9678, 13260, 16130, 19356, 20969, 24195, 27421, 32260, 41938, 48390, 54842, 62907, 82263, 83876, 96780, 104845, 109684, 125814, 137105, 164526, 209690, 251628, 274210, 314535, 329052, 356473, 411315, 419380, 548420, 629070, 712946, 822630, 1069419, 1258140, 1425892, 1645260, 1782365, 2138838, 3564730, 4277676, 5347095, 7129460, 10694190, 21388380]

約数ペア:

[(1, 21388380), (2, 10694190), (3, 7129460), (4, 5347095), (5, 4277676), (6, 3564730), (10, 2138838), (12, 1782365), (13, 1645260), (15, 1425892), (17, 1258140), (20, 1069419), (26, 822630), (30, 712946), (34, 629070), (39, 548420), (51, 419380), (52, 411315), (60, 356473), (65, 329052), (68, 314535), (78, 274210), (85, 251628), (102, 209690), (130, 164526), (156, 137105), (170, 125814), (195, 109684), (204, 104845), (221, 96780), (255, 83876), (260, 82263), (340, 62907), (390, 54842), (442, 48390), (510, 41938), (663, 32260), (780, 27421), (884, 24195), (1020, 20969), (1105, 19356), (1326, 16130), (1613, 13260), (2210, 9678), (2652, 8065), (3226, 6630), (3315, 6452), (4420, 4839)]