419900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 72

約数和(自身を含む): 1093680

約数和(自身を除く): 673780

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 25, 26, 34, 38, 50, 52, 65, 68, 76, 85, 95, 100, 130, 170, 190, 221, 247, 260, 323, 325, 340, 380, 425, 442, 475, 494, 646, 650, 850, 884, 950, 988, 1105, 1235, 1292, 1300, 1615, 1700, 1900, 2210, 2470, 3230, 4199, 4420, 4940, 5525, 6175, 6460, 8075, 8398, 11050, 12350, 16150, 16796, 20995, 22100, 24700, 32300, 41990, 83980, 104975, 209950, 419900]

約数ペア:

[(1, 419900), (2, 209950), (4, 104975), (5, 83980), (10, 41990), (13, 32300), (17, 24700), (19, 22100), (20, 20995), (25, 16796), (26, 16150), (34, 12350), (38, 11050), (50, 8398), (52, 8075), (65, 6460), (68, 6175), (76, 5525), (85, 4940), (95, 4420), (100, 4199), (130, 3230), (170, 2470), (190, 2210), (221, 1900), (247, 1700), (260, 1615), (323, 1300), (325, 1292), (340, 1235), (380, 1105), (425, 988), (442, 950), (475, 884), (494, 850), (646, 650)]