1998990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:206

約数の個数: 96

約数和(自身を含む): 6289920

約数和(自身を除く): 4290930

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 38, 42, 45, 57, 63, 70, 90, 95, 105, 114, 126, 133, 167, 171, 190, 210, 266, 285, 315, 334, 342, 399, 501, 570, 630, 665, 798, 835, 855, 1002, 1169, 1197, 1330, 1503, 1670, 1710, 1995, 2338, 2394, 2505, 3006, 3173, 3507, 3990, 5010, 5845, 5985, 6346, 7014, 7515, 9519, 10521, 11690, 11970, 15030, 15865, 17535, 19038, 21042, 22211, 28557, 31730, 35070, 44422, 47595, 52605, 57114, 66633, 95190, 105210, 111055, 133266, 142785, 199899, 222110, 285570, 333165, 399798, 666330, 999495, 1998990]

約数ペア:

[(1, 1998990), (2, 999495), (3, 666330), (5, 399798), (6, 333165), (7, 285570), (9, 222110), (10, 199899), (14, 142785), (15, 133266), (18, 111055), (19, 105210), (21, 95190), (30, 66633), (35, 57114), (38, 52605), (42, 47595), (45, 44422), (57, 35070), (63, 31730), (70, 28557), (90, 22211), (95, 21042), (105, 19038), (114, 17535), (126, 15865), (133, 15030), (167, 11970), (171, 11690), (190, 10521), (210, 9519), (266, 7515), (285, 7014), (315, 6346), (334, 5985), (342, 5845), (399, 5010), (501, 3990), (570, 3507), (630, 3173), (665, 3006), (798, 2505), (835, 2394), (855, 2338), (1002, 1995), (1169, 1710), (1197, 1670), (1330, 1503)]