21997430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1051}}^1$

素因数の和:1101

約数の個数: 64

約数和(自身を含む): 50899968

約数和(自身を除く): 28902538

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 35, 46, 65, 70, 91, 115, 130, 161, 182, 230, 299, 322, 455, 598, 805, 910, 1051, 1495, 1610, 2093, 2102, 2990, 4186, 5255, 7357, 10465, 10510, 13663, 14714, 20930, 24173, 27326, 36785, 48346, 68315, 73570, 95641, 120865, 136630, 169211, 191282, 241730, 314249, 338422, 478205, 628498, 846055, 956410, 1571245, 1692110, 2199743, 3142490, 4399486, 10998715, 21997430]

約数ペア:

[(1, 21997430), (2, 10998715), (5, 4399486), (7, 3142490), (10, 2199743), (13, 1692110), (14, 1571245), (23, 956410), (26, 846055), (35, 628498), (46, 478205), (65, 338422), (70, 314249), (91, 241730), (115, 191282), (130, 169211), (161, 136630), (182, 120865), (230, 95641), (299, 73570), (322, 68315), (455, 48346), (598, 36785), (805, 27326), (910, 24173), (1051, 20930), (1495, 14714), (1610, 13663), (2093, 10510), (2102, 10465), (2990, 7357), (4186, 5255)]