128366900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 288731520

約数和(自身を除く): 160364620

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 131, 164, 205, 239, 262, 410, 478, 524, 655, 820, 956, 1025, 1195, 1310, 2050, 2390, 2620, 3275, 4100, 4780, 5371, 5975, 6550, 9799, 10742, 11950, 13100, 19598, 21484, 23900, 26855, 31309, 39196, 48995, 53710, 62618, 97990, 107420, 125236, 134275, 156545, 195980, 244975, 268550, 313090, 489950, 537100, 626180, 782725, 979900, 1283669, 1565450, 2567338, 3130900, 5134676, 6418345, 12836690, 25673380, 32091725, 64183450, 128366900]

約数ペア:

[(1, 128366900), (2, 64183450), (4, 32091725), (5, 25673380), (10, 12836690), (20, 6418345), (25, 5134676), (41, 3130900), (50, 2567338), (82, 1565450), (100, 1283669), (131, 979900), (164, 782725), (205, 626180), (239, 537100), (262, 489950), (410, 313090), (478, 268550), (524, 244975), (655, 195980), (820, 156545), (956, 134275), (1025, 125236), (1195, 107420), (1310, 97990), (2050, 62618), (2390, 53710), (2620, 48995), (3275, 39196), (4100, 31309), (4780, 26855), (5371, 23900), (5975, 21484), (6550, 19598), (9799, 13100), (10742, 11950)]