30810220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 76129200

約数和(自身を除く): 45318980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 211, 245, 298, 422, 490, 596, 745, 844, 980, 1043, 1055, 1477, 1490, 2086, 2110, 2954, 2980, 4172, 4220, 5215, 5908, 7301, 7385, 10339, 10430, 14602, 14770, 20678, 20860, 29204, 29540, 31439, 36505, 41356, 51695, 62878, 73010, 103390, 125756, 146020, 157195, 206780, 220073, 314390, 440146, 628780, 880292, 1100365, 1540511, 2200730, 3081022, 4401460, 6162044, 7702555, 15405110, 30810220]

約数ペア:

[(1, 30810220), (2, 15405110), (4, 7702555), (5, 6162044), (7, 4401460), (10, 3081022), (14, 2200730), (20, 1540511), (28, 1100365), (35, 880292), (49, 628780), (70, 440146), (98, 314390), (140, 220073), (149, 206780), (196, 157195), (211, 146020), (245, 125756), (298, 103390), (422, 73010), (490, 62878), (596, 51695), (745, 41356), (844, 36505), (980, 31439), (1043, 29540), (1055, 29204), (1477, 20860), (1490, 20678), (2086, 14770), (2110, 14602), (2954, 10430), (2980, 10339), (4172, 7385), (4220, 7301), (5215, 5908)]