81170012140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{305633}}^1$

素因数の和:305927

約数の個数: 72

約数和(自身を含む): 199019080512

約数和(自身を除く): 117849068372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 271, 490, 542, 980, 1084, 1355, 1897, 2710, 3794, 5420, 7588, 9485, 13279, 18970, 26558, 37940, 53116, 66395, 132790, 265580, 305633, 611266, 1222532, 1528165, 2139431, 3056330, 4278862, 6112660, 8557724, 10697155, 14976017, 21394310, 29952034, 42788620, 59904068, 74880085, 82826543, 149760170, 165653086, 299520340, 331306172, 414132715, 579785801, 828265430, 1159571602, 1656530860, 2319143204, 2898929005, 4058500607, 5797858010, 8117001214, 11595716020, 16234002428, 20292503035, 40585006070, 81170012140]

約数ペア:

[(1, 81170012140), (2, 40585006070), (4, 20292503035), (5, 16234002428), (7, 11595716020), (10, 8117001214), (14, 5797858010), (20, 4058500607), (28, 2898929005), (35, 2319143204), (49, 1656530860), (70, 1159571602), (98, 828265430), (140, 579785801), (196, 414132715), (245, 331306172), (271, 299520340), (490, 165653086), (542, 149760170), (980, 82826543), (1084, 74880085), (1355, 59904068), (1897, 42788620), (2710, 29952034), (3794, 21394310), (5420, 14976017), (7588, 10697155), (9485, 8557724), (13279, 6112660), (18970, 4278862), (26558, 3056330), (37940, 2139431), (53116, 1528165), (66395, 1222532), (132790, 611266), (265580, 305633)]