19996788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2357}}^1$

素因数の和:2472

約数の個数: 48

約数和(自身を含む): 53875584

約数和(自身を除く): 33878796

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 101, 202, 303, 404, 606, 707, 1212, 1414, 2121, 2357, 2828, 4242, 4714, 7071, 8484, 9428, 14142, 16499, 28284, 32998, 49497, 65996, 98994, 197988, 238057, 476114, 714171, 952228, 1428342, 1666399, 2856684, 3332798, 4999197, 6665596, 9998394, 19996788]

約数ペア:

[(1, 19996788), (2, 9998394), (3, 6665596), (4, 4999197), (6, 3332798), (7, 2856684), (12, 1666399), (14, 1428342), (21, 952228), (28, 714171), (42, 476114), (84, 238057), (101, 197988), (202, 98994), (303, 65996), (404, 49497), (606, 32998), (707, 28284), (1212, 16499), (1414, 14142), (2121, 9428), (2357, 8484), (2828, 7071), (4242, 4714)]