260162500

素因数分解:

$2^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{1601}}^1$

素因数の和:1643

約数の個数: 72

約数和(自身を含む): 613226376

約数和(自身を除く): 353063876

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 625, 650, 1250, 1300, 1601, 1625, 2500, 3125, 3202, 3250, 6250, 6404, 6500, 8005, 8125, 12500, 16010, 16250, 20813, 32020, 32500, 40025, 40625, 41626, 80050, 81250, 83252, 104065, 160100, 162500, 200125, 208130, 400250, 416260, 520325, 800500, 1000625, 1040650, 2001250, 2081300, 2601625, 4002500, 5003125, 5203250, 10006250, 10406500, 13008125, 20012500, 26016250, 52032500, 65040625, 130081250, 260162500]

約数ペア:

[(1, 260162500), (2, 130081250), (4, 65040625), (5, 52032500), (10, 26016250), (13, 20012500), (20, 13008125), (25, 10406500), (26, 10006250), (50, 5203250), (52, 5003125), (65, 4002500), (100, 2601625), (125, 2081300), (130, 2001250), (250, 1040650), (260, 1000625), (325, 800500), (500, 520325), (625, 416260), (650, 400250), (1250, 208130), (1300, 200125), (1601, 162500), (1625, 160100), (2500, 104065), (3125, 83252), (3202, 81250), (3250, 80050), (6250, 41626), (6404, 40625), (6500, 40025), (8005, 32500), (8125, 32020), (12500, 20813), (16010, 16250)]