42644020

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 92534400

約数和(自身を除く): 49890380

約数列:

[1, 2, 4, 5, 10, 20, 59, 71, 118, 142, 236, 284, 295, 355, 509, 590, 710, 1018, 1180, 1420, 2036, 2545, 4189, 5090, 8378, 10180, 16756, 20945, 30031, 36139, 41890, 60062, 72278, 83780, 120124, 144556, 150155, 180695, 300310, 361390, 600620, 722780, 2132201, 4264402, 8528804, 10661005, 21322010, 42644020]

約数ペア:

[(1, 42644020), (2, 21322010), (4, 10661005), (5, 8528804), (10, 4264402), (20, 2132201), (59, 722780), (71, 600620), (118, 361390), (142, 300310), (236, 180695), (284, 150155), (295, 144556), (355, 120124), (509, 83780), (590, 72278), (710, 60062), (1018, 41890), (1180, 36139), (1420, 30031), (2036, 20945), (2545, 16756), (4189, 10180), (5090, 8378)]