291214720

素因数分解:

$2^7\times 5^1\times {\mathrm{229}}^1\times {\mathrm{1987}}^1$

素因数の和:2235

約数の個数: 64

約数和(自身を含む): 699577200

約数和(自身を除く): 408362480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 229, 320, 458, 640, 916, 1145, 1832, 1987, 2290, 3664, 3974, 4580, 7328, 7948, 9160, 9935, 14656, 15896, 18320, 19870, 29312, 31792, 36640, 39740, 63584, 73280, 79480, 127168, 146560, 158960, 254336, 317920, 455023, 635840, 910046, 1271680, 1820092, 2275115, 3640184, 4550230, 7280368, 9100460, 14560736, 18200920, 29121472, 36401840, 58242944, 72803680, 145607360, 291214720]

約数ペア:

[(1, 291214720), (2, 145607360), (4, 72803680), (5, 58242944), (8, 36401840), (10, 29121472), (16, 18200920), (20, 14560736), (32, 9100460), (40, 7280368), (64, 4550230), (80, 3640184), (128, 2275115), (160, 1820092), (229, 1271680), (320, 910046), (458, 635840), (640, 455023), (916, 317920), (1145, 254336), (1832, 158960), (1987, 146560), (2290, 127168), (3664, 79480), (3974, 73280), (4580, 63584), (7328, 39740), (7948, 36640), (9160, 31792), (9935, 29312), (14656, 19870), (15896, 18320)]