128417900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{571}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 302366064

約数和(自身を除く): 173948164

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 173, 260, 325, 346, 571, 650, 692, 865, 1142, 1300, 1730, 2249, 2284, 2855, 3460, 4325, 4498, 5710, 7423, 8650, 8996, 11245, 11420, 14275, 14846, 17300, 22490, 28550, 29692, 37115, 44980, 56225, 57100, 74230, 98783, 112450, 148460, 185575, 197566, 224900, 371150, 395132, 493915, 742300, 987830, 1284179, 1975660, 2469575, 2568358, 4939150, 5136716, 6420895, 9878300, 12841790, 25683580, 32104475, 64208950, 128417900]

約数ペア:

[(1, 128417900), (2, 64208950), (4, 32104475), (5, 25683580), (10, 12841790), (13, 9878300), (20, 6420895), (25, 5136716), (26, 4939150), (50, 2568358), (52, 2469575), (65, 1975660), (100, 1284179), (130, 987830), (173, 742300), (260, 493915), (325, 395132), (346, 371150), (571, 224900), (650, 197566), (692, 185575), (865, 148460), (1142, 112450), (1300, 98783), (1730, 74230), (2249, 57100), (2284, 56225), (2855, 44980), (3460, 37115), (4325, 29692), (4498, 28550), (5710, 22490), (7423, 17300), (8650, 14846), (8996, 14275), (11245, 11420)]