840804940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{16339}}^1$

素因数の和:16462

約数の個数: 48

約数和(自身を含む): 1844720640

約数和(自身を除く): 1003915700

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 415, 620, 830, 1660, 2573, 5146, 10292, 12865, 16339, 25730, 32678, 51460, 65356, 81695, 163390, 326780, 506509, 1013018, 1356137, 2026036, 2532545, 2712274, 5065090, 5424548, 6780685, 10130180, 13561370, 27122740, 42040247, 84080494, 168160988, 210201235, 420402470, 840804940]

約数ペア:

[(1, 840804940), (2, 420402470), (4, 210201235), (5, 168160988), (10, 84080494), (20, 42040247), (31, 27122740), (62, 13561370), (83, 10130180), (124, 6780685), (155, 5424548), (166, 5065090), (310, 2712274), (332, 2532545), (415, 2026036), (620, 1356137), (830, 1013018), (1660, 506509), (2573, 326780), (5146, 163390), (10292, 81695), (12865, 65356), (16339, 51460), (25730, 32678)]