198965440

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^2\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 84

約数和(自身を含む): 490319568

約数和(自身を除く): 291354128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 647, 961, 992, 1240, 1294, 1922, 1984, 2480, 2588, 3235, 3844, 4805, 4960, 5176, 6470, 7688, 9610, 9920, 10352, 12940, 15376, 19220, 20057, 20704, 25880, 30752, 38440, 40114, 41408, 51760, 61504, 76880, 80228, 100285, 103520, 153760, 160456, 200570, 207040, 307520, 320912, 401140, 621767, 641824, 802280, 1243534, 1283648, 1604560, 2487068, 3108835, 3209120, 4974136, 6217670, 6418240, 9948272, 12435340, 19896544, 24870680, 39793088, 49741360, 99482720, 198965440]

約数ペア:

[(1, 198965440), (2, 99482720), (4, 49741360), (5, 39793088), (8, 24870680), (10, 19896544), (16, 12435340), (20, 9948272), (31, 6418240), (32, 6217670), (40, 4974136), (62, 3209120), (64, 3108835), (80, 2487068), (124, 1604560), (155, 1283648), (160, 1243534), (248, 802280), (310, 641824), (320, 621767), (496, 401140), (620, 320912), (647, 307520), (961, 207040), (992, 200570), (1240, 160456), (1294, 153760), (1922, 103520), (1984, 100285), (2480, 80228), (2588, 76880), (3235, 61504), (3844, 51760), (4805, 41408), (4960, 40114), (5176, 38440), (6470, 30752), (7688, 25880), (9610, 20704), (9920, 20057), (10352, 19220), (12940, 15376)]