20823320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2399}}^1$

素因数の和:2448

約数の個数: 64

約数和(自身を含む): 55296000

約数和(自身を除く): 34472680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2399, 4340, 4798, 8680, 9596, 11995, 16793, 19192, 23990, 33586, 47980, 67172, 74369, 83965, 95960, 134344, 148738, 167930, 297476, 335860, 371845, 520583, 594952, 671720, 743690, 1041166, 1487380, 2082332, 2602915, 2974760, 4164664, 5205830, 10411660, 20823320]

約数ペア:

[(1, 20823320), (2, 10411660), (4, 5205830), (5, 4164664), (7, 2974760), (8, 2602915), (10, 2082332), (14, 1487380), (20, 1041166), (28, 743690), (31, 671720), (35, 594952), (40, 520583), (56, 371845), (62, 335860), (70, 297476), (124, 167930), (140, 148738), (155, 134344), (217, 95960), (248, 83965), (280, 74369), (310, 67172), (434, 47980), (620, 33586), (868, 23990), (1085, 19192), (1240, 16793), (1736, 11995), (2170, 9596), (2399, 8680), (4340, 4798)]