201979100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{641}}^1$

素因数の和:815

約数の個数: 72

約数和(自身を含む): 461407968

約数和(自身を除く): 259428868

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 137, 230, 274, 460, 548, 575, 641, 685, 1150, 1282, 1370, 2300, 2564, 2740, 3151, 3205, 3425, 6302, 6410, 6850, 12604, 12820, 13700, 14743, 15755, 16025, 29486, 31510, 32050, 58972, 63020, 64100, 73715, 78775, 87817, 147430, 157550, 175634, 294860, 315100, 351268, 368575, 439085, 737150, 878170, 1474300, 1756340, 2019791, 2195425, 4039582, 4390850, 8079164, 8781700, 10098955, 20197910, 40395820, 50494775, 100989550, 201979100]

約数ペア:

[(1, 201979100), (2, 100989550), (4, 50494775), (5, 40395820), (10, 20197910), (20, 10098955), (23, 8781700), (25, 8079164), (46, 4390850), (50, 4039582), (92, 2195425), (100, 2019791), (115, 1756340), (137, 1474300), (230, 878170), (274, 737150), (460, 439085), (548, 368575), (575, 351268), (641, 315100), (685, 294860), (1150, 175634), (1282, 157550), (1370, 147430), (2300, 87817), (2564, 78775), (2740, 73715), (3151, 64100), (3205, 63020), (3425, 58972), (6302, 32050), (6410, 31510), (6850, 29486), (12604, 16025), (12820, 15755), (13700, 14743)]