31978380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 106293600

約数和(自身を除く): 74315220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 73, 84, 98, 105, 140, 146, 147, 149, 196, 210, 219, 245, 292, 294, 298, 365, 420, 438, 447, 490, 511, 588, 596, 730, 735, 745, 876, 894, 980, 1022, 1043, 1095, 1460, 1470, 1490, 1533, 1788, 2044, 2086, 2190, 2235, 2555, 2940, 2980, 3066, 3129, 3577, 4172, 4380, 4470, 5110, 5215, 6132, 6258, 7154, 7301, 7665, 8940, 10220, 10430, 10731, 10877, 12516, 14308, 14602, 15330, 15645, 17885, 20860, 21462, 21754, 21903, 29204, 30660, 31290, 32631, 35770, 36505, 42924, 43508, 43806, 53655, 54385, 62580, 65262, 71540, 73010, 76139, 87612, 107310, 108770, 109515, 130524, 146020, 152278, 163155, 214620, 217540, 219030, 228417, 304556, 326310, 380695, 438060, 456834, 532973, 652620, 761390, 913668, 1065946, 1142085, 1522780, 1598919, 2131892, 2284170, 2664865, 3197838, 4568340, 5329730, 6395676, 7994595, 10659460, 15989190, 31978380]

約数ペア:

[(1, 31978380), (2, 15989190), (3, 10659460), (4, 7994595), (5, 6395676), (6, 5329730), (7, 4568340), (10, 3197838), (12, 2664865), (14, 2284170), (15, 2131892), (20, 1598919), (21, 1522780), (28, 1142085), (30, 1065946), (35, 913668), (42, 761390), (49, 652620), (60, 532973), (70, 456834), (73, 438060), (84, 380695), (98, 326310), (105, 304556), (140, 228417), (146, 219030), (147, 217540), (149, 214620), (196, 163155), (210, 152278), (219, 146020), (245, 130524), (292, 109515), (294, 108770), (298, 107310), (365, 87612), (420, 76139), (438, 73010), (447, 71540), (490, 65262), (511, 62580), (588, 54385), (596, 53655), (730, 43806), (735, 43508), (745, 42924), (876, 36505), (894, 35770), (980, 32631), (1022, 31290), (1043, 30660), (1095, 29204), (1460, 21903), (1470, 21754), (1490, 21462), (1533, 20860), (1788, 17885), (2044, 15645), (2086, 15330), (2190, 14602), (2235, 14308), (2555, 12516), (2940, 10877), (2980, 10731), (3066, 10430), (3129, 10220), (3577, 8940), (4172, 7665), (4380, 7301), (4470, 7154), (5110, 6258), (5215, 6132)]