1640649440

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1\times {\mathrm{653}}^1$

素因数の和:1092

約数の個数: 96

約数和(自身を含む): 3987035136

約数和(自身を除く): 2346385696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 383, 410, 653, 656, 766, 820, 1306, 1312, 1532, 1640, 1915, 2612, 3064, 3265, 3280, 3830, 5224, 6128, 6530, 6560, 7660, 10448, 12256, 13060, 15320, 15703, 20896, 26120, 26773, 30640, 31406, 52240, 53546, 61280, 62812, 78515, 104480, 107092, 125624, 133865, 157030, 214184, 250099, 251248, 267730, 314060, 428368, 500198, 502496, 535460, 628120, 856736, 1000396, 1070920, 1250495, 1256240, 2000792, 2141840, 2500990, 2512480, 4001584, 4283680, 5001980, 8003168, 10003960, 10254059, 20007920, 20508118, 40015840, 41016236, 51270295, 82032472, 102540590, 164064944, 205081180, 328129888, 410162360, 820324720, 1640649440]

約数ペア:

[(1, 1640649440), (2, 820324720), (4, 410162360), (5, 328129888), (8, 205081180), (10, 164064944), (16, 102540590), (20, 82032472), (32, 51270295), (40, 41016236), (41, 40015840), (80, 20508118), (82, 20007920), (160, 10254059), (164, 10003960), (205, 8003168), (328, 5001980), (383, 4283680), (410, 4001584), (653, 2512480), (656, 2500990), (766, 2141840), (820, 2000792), (1306, 1256240), (1312, 1250495), (1532, 1070920), (1640, 1000396), (1915, 856736), (2612, 628120), (3064, 535460), (3265, 502496), (3280, 500198), (3830, 428368), (5224, 314060), (6128, 267730), (6530, 251248), (6560, 250099), (7660, 214184), (10448, 157030), (12256, 133865), (13060, 125624), (15320, 107092), (15703, 104480), (20896, 78515), (26120, 62812), (26773, 61280), (30640, 53546), (31406, 52240)]