199740440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{2039}}^1$

素因数の和:2160

約数の個数: 64

約数和(自身を含む): 470016000

約数和(自身を除く): 270275560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 155, 158, 248, 310, 316, 395, 620, 632, 790, 1240, 1580, 2039, 2449, 3160, 4078, 4898, 8156, 9796, 10195, 12245, 16312, 19592, 20390, 24490, 40780, 48980, 63209, 81560, 97960, 126418, 161081, 252836, 316045, 322162, 505672, 632090, 644324, 805405, 1264180, 1288648, 1610810, 2528360, 3221620, 4993511, 6443240, 9987022, 19974044, 24967555, 39948088, 49935110, 99870220, 199740440]

約数ペア:

[(1, 199740440), (2, 99870220), (4, 49935110), (5, 39948088), (8, 24967555), (10, 19974044), (20, 9987022), (31, 6443240), (40, 4993511), (62, 3221620), (79, 2528360), (124, 1610810), (155, 1288648), (158, 1264180), (248, 805405), (310, 644324), (316, 632090), (395, 505672), (620, 322162), (632, 316045), (790, 252836), (1240, 161081), (1580, 126418), (2039, 97960), (2449, 81560), (3160, 63209), (4078, 48980), (4898, 40780), (8156, 24490), (9796, 20390), (10195, 19592), (12245, 16312)]