19901646

素因数分解:

$2^1\times 3^3\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 26365554

約数列:

[1, 2, 3, 6, 9, 18, 27, 41, 54, 82, 89, 101, 123, 178, 202, 246, 267, 303, 369, 534, 606, 738, 801, 909, 1107, 1602, 1818, 2214, 2403, 2727, 3649, 4141, 4806, 5454, 7298, 8282, 8989, 10947, 12423, 17978, 21894, 24846, 26967, 32841, 37269, 53934, 65682, 74538, 80901, 98523, 111807, 161802, 197046, 223614, 242703, 368549, 485406, 737098, 1105647, 2211294, 3316941, 6633882, 9950823, 19901646]

約数ペア:

[(1, 19901646), (2, 9950823), (3, 6633882), (6, 3316941), (9, 2211294), (18, 1105647), (27, 737098), (41, 485406), (54, 368549), (82, 242703), (89, 223614), (101, 197046), (123, 161802), (178, 111807), (202, 98523), (246, 80901), (267, 74538), (303, 65682), (369, 53934), (534, 37269), (606, 32841), (738, 26967), (801, 24846), (909, 21894), (1107, 17978), (1602, 12423), (1818, 10947), (2214, 8989), (2403, 8282), (2727, 7298), (3649, 5454), (4141, 4806)]