17779820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 22136980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 659, 710, 1318, 1349, 1420, 2636, 2698, 3295, 5396, 6590, 6745, 12521, 13180, 13490, 25042, 26980, 46789, 50084, 62605, 93578, 125210, 187156, 233945, 250420, 467890, 888991, 935780, 1777982, 3555964, 4444955, 8889910, 17779820]

約数ペア:

[(1, 17779820), (2, 8889910), (4, 4444955), (5, 3555964), (10, 1777982), (19, 935780), (20, 888991), (38, 467890), (71, 250420), (76, 233945), (95, 187156), (142, 125210), (190, 93578), (284, 62605), (355, 50084), (380, 46789), (659, 26980), (710, 25042), (1318, 13490), (1349, 13180), (1420, 12521), (2636, 6745), (2698, 6590), (3295, 5396)]